St. Martin, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Martin, a community in Harrison County, Mississippi.
Overnight
66°F
Areas Of Fog
Areas of fog. Mostly cloudy. Low around 66, with temperatures rising to around 69 overnight. Wind around 0 mph.
7-day forecast for St. Martin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Areas Of Fog | 0 mph | 1% |
| Wednesday | 81°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 30% |
| Wednesday Night | 61°F | Areas Of Fog | 0 to 5 mph NW | 14% |
| Thursday | 80°F | Sunny | 0 to 5 mph S | 2% |
| Thursday Night | 62°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Friday | 79°F | Mostly Sunny | 5 mph NW | 4% |
| Friday Night | 54°F | Mostly Clear | 0 to 10 mph N | 1% |
| Saturday | 75°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 48°F | Partly Cloudy | 5 mph N | 0% |
| Sunday | 70°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 46°F | Partly Cloudy | 5 mph N | 3% |
| Monday | 72°F | Sunny | 5 mph N | 5% |
| Monday Night | 46°F | Mostly Clear | 0 to 5 mph N | 4% |
| Tuesday | 73°F | Sunny | 5 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov) for St. Martin (30.438, -88.862). Updated through the day.
Growing snapshot for St. Martin
Last spring frost
Feb 12
First fall frost
Dec 14
Growing season
301 days
Hardiness zone
9a
More local growing data for St. Martin: nearby ZIP 39540 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Biloxi, Ms (7.1 mi from St. Martin). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.